//
//  UIView+YJFrame.m
//  YJExtensionDemo
//
//  Created by cool on 2018/4/20.
//  Copyright © 2018 child. All rights reserved.
//

#import "UIView+YJFrame.h"

@implementation UIView (YJFrame)

- (CGFloat)top
{
    return self.frame.origin.y;
}

- (void)setTop:(CGFloat)y
{
    CGRect frame = self.frame;
    frame.origin.y = y;
    self.frame = frame;
}

- (CGFloat)right
{
    return self.frame.origin.x + self.frame.size.width;
}

- (void)setRight:(CGFloat)right
{
    CGRect frame = self.frame;
    frame.origin.x = right - self.frame.size.width;
    self.frame = frame;
}

- (CGFloat)bottom
{
    return self.frame.origin.y + self.frame.size.height;
}

- (void)setBottom:(CGFloat)bottom
{
    CGRect frame = self.frame;
    frame.origin.y = bottom - self.frame.size.height;
    self.frame = frame;
}

- (CGFloat)left
{
    return self.frame.origin.x;
}

- (void)setLeft:(CGFloat)x
{
    CGRect frame = self.frame;
    frame.origin.x = x;
    self.frame = frame;
}

- (CGFloat)width
{
    return self.frame.size.width;
}

- (void)setWidth:(CGFloat)width
{
    CGRect frame = self.frame;
    frame.size.width = width;
    self.frame = frame;
}

- (CGFloat)height
{
    return self.frame.size.height;
}

- (void)setHeight:(CGFloat)height
{
    CGRect frame = self.frame;
    frame.size.height = height;
    self.frame = frame;
}

#pragma mark - Shortcuts for frame properties

- (CGPoint)origin {
    return self.frame.origin;
}

- (void)setOrigin:(CGPoint)origin {
    CGRect frame = self.frame;
    frame.origin = origin;
    self.frame = frame;
}

- (CGSize)size {
    return self.frame.size;
}

- (void)setSize:(CGSize)size {
    CGRect frame = self.frame;
    frame.size = size;
    self.frame = frame;
}
#pragma mark - Shortcuts for positions

- (CGFloat)centerX {
    return self.center.x;
}

- (void)setCenterX:(CGFloat)centerX {
    self.center = CGPointMake(centerX, self.center.y);
}

- (CGFloat)centerY {
    return self.center.y;
}

- (void)setCenterY:(CGFloat)centerY {
    self.center = CGPointMake(self.center.x, centerY);
}

+ (UIEdgeInsets)yj_windowSafeAreaInsets {
    static UIEdgeInsets insets;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        insets = UIEdgeInsetsZero;
        if (@available(iOS 11.0, *)) {
            for (UIWindow *window in [UIApplication sharedApplication].windows) {
                if (window.safeAreaInsets.top > 0) {
                    insets = window.safeAreaInsets;
                }
            }
        }
    });
    // 满足下列条件, 重新取值, 防止取值的时候window没有
    if ([UIApplication sharedApplication].windows.count == 0 && insets.top == 0) {
        if (@available(iOS 11.0, *)) {
            onceToken = 0;
        }
    }
    return insets;
}

@end
